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  1. mmu_man

    Parametric PGA socket

    I usually add margins to the models, how much did you add?
  2. mmu_man

    Parametric PGA socket

    I saw @max1zzz had a try at OpenSCAD, to generate PGA sockets, so I helped and cleaned up the code, made it more parametric, so we can now 3D-print sockets for all those… The code is here.
  3. mmu_man

    343S0120 (0120) voltage monitor IC (LC, Color Classic, Classic II) replacement

    I received the PCBs and *finally* some chips, after a 3rd order (1st never shipped, 2nd never arrived…). Looks promising:
  4. mmu_man

    343S0120 (0120) voltage monitor IC (LC, Color Classic, Classic II) replacement

    If only my ISP would accept the account validation mail from PCBWay…
  5. mmu_man

    343S0120 (0120) voltage monitor IC (LC, Color Classic, Classic II) replacement

    I got a routed PCB, but so tiny it'd probably wouldn't be accepted by fabs… luckily it seems possible to do your own cuts for castellated PCBs, which means panelizing them manually would make them larger and probably easier to pass the validation. I should try that soon.
  6. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Been sidetracked by the companion chip (0120), which seemed easier to tackle first.
  7. mmu_man

    343S0120 (0120) voltage monitor IC (LC, Color Classic, Classic II) replacement

    I've been distracted from EGRET woes by that small chip next to it… I've since figured out the pinout and characteristics, and found a potential candidate for replacement. But of course it doesn't have the same pinout, and of course it's also SOIC-8, because the smaller TSSOP version is...
  8. mmu_man

    FOSDEM 2024 (Feb 3&4, Brussels, EU) - Retrocomputing Devroom - Call for papers

    Retrocomputing Devroom - WHAT FOSDEM offers open source and free software developers a place to meet, share ideas and collaborate. Renowned for being highly developer-oriented, the event brings together some 8000+ geeks from all over the world. The twenty-fourth edition will take place...
  9. mmu_man

    Replacement headphone jack for Macintosh IIci and similar logic boards

    If the legs are long enough, maybe a 1.2mm interposer PCB might be enough? You can check with a piece of cardboard, make holes to get the pins through, and see if they go down to the other face of the logic board. It will be a bit more fragile, but it should work.
  10. mmu_man

    Plagued Capacitor List

    Discord user CJ posted a list there of capacitor series that were found to be leaking, some already mentioned on the badcaps forums, and agreed to have it posted there. Feel free to add more as you find them. Chemi-con - LXF, SXE, SXF, SXG, TXF Elna - RC2S, RC3S, RSE, RSG, RSH NIC Components...
  11. mmu_man

    Micro-Alchimie (France)

    Last week-end we had 65 people gathering in a minuscule town in France with old computers… Some people took photos. I fixed some stuff there (like an N64 PSU brick, an Amiga RAM card…), and we had a lot of fun.
  12. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Been working on making fixes on 6805 support in Radare2 to help with reverse engineering…
  13. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Oh I have a Tanzania based clone, I'll have to dump that one I suppose.
  14. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    I've checked many schematics and compiled the pinouts, and this is just a myth, it's the exact same uC with the same pinout and just an Apple reference painted over. They just changed the function of some pin but that's it.
  15. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    So, I had some things ordered from uncle ali, some arrived already. If other activities permit I might find the time to build a programmer. I also need to design a same-footprint SOIC-28 socket because those don't exist.
  16. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Well it's the occasion to fix r2 as well. Is the caboose one in the Mac_ROMs file? I only find 3 EGRET and 3 CUDA files in there. Plus if I can find what I want we won't even have to recode this anyway.
  17. mmu_man

    You on Mastodon?

    Well, why not… Anyway you don't have to go to Mastodon, you can go to Pleroma, Misskey or some other platform that are also part of the great Fediverse.
  18. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    I looked at the disassembly on github mentioned on MLA, but it's really partial and only for one version. I then looked at Radare2 to automate this but the 680x backend seems really unfinished, it even stripped the last character of each disassembly line… So this can take a while as I'll have to...
  19. mmu_man

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Last I looked at it, there was one HC05 chip that was supposedly still compatible with the original HC05E1 that Apple used that possibly could use the binaries as is. Haven't had the time to investigate any further. Seems UTSource (hmm, right… "used" OTP?) & octoparts still has some, but I never...
  20. mmu_man

    Repairing PowerBook 140 standoffs

    I have a 180c open on my table here and some posts are partially broken, but I wanted to try and glue them back first. Anyway, can't look at it until next week.